The film opens with a brutal scene of a restrained woman giving birth who is then killed by a mutant (Papa Hades). There follows a synopsis of the previous movie, explaining that electronic surveillance was ordered installed in the New Mexico military base. The scientists are then shown working on the electronic surveillance installation and encountering problems with rats chewing the insulation on their power cables. Some ‘false’ readings are seen before the system fails. The antagonists are introduced at this point and the scientists and their colonel are depicted meeting various untimely and gruesome ends.